发明授权
US09090540B2 Process for the production of methylene diphenyl diisocyanate isomer mixtures with specific isomer distributions and new products derived
有权
生产亚甲基二苯基异氰酸酯异构体混合物的方法，具有特异性异构体分布和新产物
- 专利标题： Process for the production of methylene diphenyl diisocyanate isomer mixtures with specific isomer distributions and new products derived
- 专利标题（中）： 生产亚甲基二苯基异氰酸酯异构体混合物的方法，具有特异性异构体分布和新产物
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申请号： US13814981申请日： 2011-09-20
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公开(公告)号： US09090540B2公开(公告)日： 2015-07-28
- 发明人: Andrei S. Merenov , Dennis W. Jewell , Paul A. Gillis , Gerard I. Jansma , Ashley W. Breed , John J. Anderson , Daniel J. Reed
- 申请人： Andrei S. Merenov , Dennis W. Jewell , Paul A. Gillis , Gerard I. Jansma , Ashley W. Breed , John J. Anderson , Daniel J. Reed
- 申请人地址： US MI Midland
- 专利权人： Dow Global Technologies LLC
- 当前专利权人： Dow Global Technologies LLC
- 当前专利权人地址： US MI Midland
- 国际申请： PCT/US2011/052332 WO 20110920
- 国际公布： WO2012/040187 WO 20120329
- 主分类号： C07C263/20
- IPC分类号： C07C263/20 ; C07C263/10
摘要：
The present invention a process and apparatus for the production of methylene diphenyl diisocyanate (MDI) isomer mixtures with a low 2,2′-MDI isomer content and a high 2,4′-MDI isomer content. The resulting mixtures have an increased reactivity and are acceptable in food grade application due to the reduction in primary aromatic amines formed during the curing process. The process and apparatus also include controlling the amount of 4,4′-MDI, which is the most reactive isomer in the mixture allowing use in a wide variety of applications.
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